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67806301968 = 2432470877097
BaseRepresentation
bin111111001001100100…
…100000111100010000
320111000112112000220100
4333021210200330100
52102331403130333
651052204212400
74620206025366
oct771144407420
9214015460810
1067806301968
1126835987299
121118423a100
136517b11592
1433d3539636
151b6cc3b213
hexfc9920f10

67806301968 has 30 divisors (see below), whose sum is σ = 189763470494. Its totient is φ = 22602100608.

The previous prime is 67806301967. The next prime is 67806301991. The reversal of 67806301968 is 86910360876.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 67334022144 + 472279824 = 259488^2 + 21732^2 .

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (67806301967) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 235438405 + ... + 235438692.

Almost surely, 267806301968 is an apocalyptic number.

It is an amenable number.

67806301968 is an abundant number, since it is smaller than the sum of its proper divisors (121957168526).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

67806301968 is a wasteful number, since it uses less digits than its factorization.

67806301968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470877111 (or 470877102 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The spelling of 67806301968 in words is "sixty-seven billion, eight hundred six million, three hundred one thousand, nine hundred sixty-eight".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 36 48 72 144 470877097 941754194 1412631291 1883508388 2825262582 3767016776 4237893873 5650525164 7534033552 8475787746 11301050328 16951575492 22602100656 33903150984 67806301968